Wall lamp



FIG. 1 is a front view of a wall lamp showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a perspective view thereof.

The broken line disclosure in the views represents portions of the wall lamp which form no part of the claimed design. 

CLAIM The ornamental design for a wall lamp, as shown and described. 